.footer {
  width: 375px;
  height: 52px;
  display: flex;
  background-color: #fff;
  position: fixed;
  left: 0;
  bottom: 0;
  box-shadow: 0 -2px 10px #ccc;
}
.footer .fIcon {
  height: 52px;
  width: 25%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.footer .fIcon .img {
  width: 21px;
  height: 21px;
  background-size: 100%;
}
.footer .fIcon:nth-child(1) .img {
  background-image: url(../img/hone1.png);
}
.footer .fIcon:nth-child(2) .img {
  background-image: url(../img/list1.png);
}
.footer .fIcon:nth-child(3) .img {
  background-image: url(../img/buycar1.png);
}
.footer .fIcon:nth-child(4) .img {
  background-image: url(../img/center1.png);
}
.footer .fIcon span {
  font-size: 12px;
  color: #999;
}
.footer .fIcon:nth-child(1):hover .img {
  background-image: url(../img/hone2.png);
}
.footer .fIcon:nth-child(2):hover .img {
  background-image: url(../img/list2.png);
}
.footer .fIcon:nth-child(3):hover .img {
  background-image: url(../img/buycar2.png);
}
.footer .fIcon:nth-child(4):hover .img {
  background-image: url(../img/center2.png);
}
.footer .fIcon:nth-child(1):hover span {
  color: #ff6700;
}
.footer .fIcon:nth-child(2):hover span {
  color: #ff6700;
}
.footer .fIcon:nth-child(3):hover span {
  color: #ff6700;
}
.footer .fIcon:nth-child(4):hover span {
  color: #ff6700;
}
